In Python, please comment

What can I use? You may only use the following things. You may ask about adding things to a list, but we are unlikely to add anything. If you use something disallowed, it's not an honor code violation, you just won't get points Restrictions * no modules may be imported. Allowed basic statements, variables, operators, del, indexing, slicing, in, are all allowed * any form of control flow we've covered is allowed (ifelse, loops, etc) only these built-in functions: range), len(), int, str, list), abs () only these built-in methods: s.split), s.join(), s.pop(), xs.append(), xs.extend xs.insert(), s.format() . calling other functions of the project (and your own helper functions). Please do this! Hint In our solution, we only used range, len, in, abs, .append(), .join(), .split(), and list() Remember: your grade is significantly based on passing test cases try to completely finish individual functions before moving on. The easiest way to implement many functions is to call the earlier/easier functions, so it'll pay off to complete functions before moving on. Don't let yourself be "almost done" with a function, but miss all the tests! Connect Four! Connect Four is a game where players win by placing four of their pieces in a row, either horizontally, vertically, or diagonally. The board is a vertical plane with a limited number of columns; playing a piece in a column will drop to the lowest available space. Players take turns dropping pieces into columns, trying to get four in a row before their opponent does Connect Four